CN110456562A - A kind of backlight assembly, its display device and its application terminal - Google Patents

A kind of backlight assembly, its display device and its application terminal Download PDF

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Publication number
CN110456562A
CN110456562A CN201910690699.1A CN201910690699A CN110456562A CN 110456562 A CN110456562 A CN 110456562A CN 201910690699 A CN201910690699 A CN 201910690699A CN 110456562 A CN110456562 A CN 110456562A
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CN
China
Prior art keywords
film layer
layer
backlight assembly
light
camera
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910690699.1A
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Chinese (zh)
Inventor
张桂洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Priority to CN201910690699.1A priority Critical patent/CN110456562A/en
Publication of CN110456562A publication Critical patent/CN110456562A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/005Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0051Diffusing sheet or layer
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/005Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053Prismatic sheet or layer; Brightness enhancement element, sheet or layer
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/005Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055Reflecting element, sheet or layer
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0073Light emitting diode [LED]
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133603Direct backlight with LEDs
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133605Direct backlight including specially adapted reflectors
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00Details not covered by groups G06F3/00 – G06F13/00 and G06F21/00
    • G06F1/16Constructional details or arrangements
    • G06F1/1601Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
    • G06F1/1605Multimedia displays, e.g. with integrated or attached speakers, cameras, microphones
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133614Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light

Abstract

The present invention provides a kind of backlight assembly, definition has camera shooting head region.It includes substrate layer, and reflecting layer is provided on the substrate layer, is provided with optical film layer on the reflecting layer.Wherein the optical film layer is provided with a through-hole in the camera shooting head region, is arranged with an annular light guide to film layer, wherein the inner ring of the light directing film layer is arranged concentrically with the through-hole outside the through-hole.The present invention provides a kind of backlight assemblies, it is by introducing annular light guide to film layer, to control under display screen where it direction of propagation of light in certain area around camera, it is set to be evenly distributed on camera overlying regions, then it keeps still showing picture at camera position in the liquid crystal layer by place display screen, images solution under the novel screen of one kind to provide.

Description

A kind of backlight assembly, its display device and its application terminal
Technical field
The present invention relates to flat panel display technology fields, especially, one such backlight assembly, display device where it and Its application terminal.
Background technique
It is known that screen technology is that nearly 2 years display industries focus on the technology promoted comprehensively.The benefit shielded comprehensively is: on the one hand may be used To realize higher screen accounting, it on the other hand can satisfy the installation requirements such as more softwares, APP.
For improve shield accounting, be successively proposed the hole Notch, beauty's point, water droplet screen etc., so as to place camera, sensor, The functional modules such as infrared lens.It digs circular hole technology in recent display screen also to grow up, the circular hole dug out can be placed to be taken the photograph in screen As head, screen accounting can reach 96%.But the rank that " screen comprehensively " for now, promoted in the market shields comprehensively also in a puppet Section, that is to say, that it is screen accounting with higher, but is not also " screen comprehensively " truly.
However, these three above-mentioned comprehensive screen technologies be still need to carry out the partial region of display screen borehole or Heteromorphosis processing, the band of position of camera is exposed, and to enter ambient for use of taking pictures, therefore, this is also It is that these three technical solutions can not accomplish really a main cause of screen displaying scheme comprehensively.
Further, OLED is self-luminous display technology, camera can be placed under screen by certain technology, and not The display function of its position is influenced, therefore shields accounting close to 100%.But traditional LCD shows it is that passive shine shows Show technology, it is that the light issued using LED forms three kinds of colors of RGB by color filter film again by the modulation of liquid crystal layer It is shown.Therefore in conventional LCD display technology, camera position can stop the propagation of LED light, Wu Fajin in screen Row display.
For this purpose, industry also attempts further to promote screen accounting by allowing camera shooting head region to show, but how by camera Shooting and its region can normally show that the two realizes perfect combination, and there are no good solutions for industry at present.
Summary of the invention
It is an aspect of the invention to provide a kind of backlight assemblies, use novel structure setting, make it in application It can be aobvious where being evenly distributed on it by the direction of propagation of light in certain area around camera under display screen where controlling it Then the camera overlying regions of display screen keep still showing at camera position in the liquid crystal layer by place display screen Picture images solution under the novel screen of one kind to provide.
The technical solution adopted by the invention is as follows:
A kind of backlight assembly, definition have camera shooting head region.It includes substrate layer, and reflection is provided on the substrate layer Layer, optical film layer is provided on the reflecting layer.Wherein the optical film layer is provided with a through-hole, institute in the camera shooting head region It states and is arranged with an annular light guide to film layer, wherein the inner ring of the light directing film layer is arranged concentrically with the through-hole outside through-hole.
It is known that light guide tropism membrane material is generally prepared using organic material, it, can by the microstructure change in design film To realize the control to light direction, pass through in the present invention and introduce the light directing film layer, can control incident in the through-hole Light along certain directions outgoing Strength Changes.It can control different angle by the internal structure of ingehious design light directing film Luminous intensity out.Based on this function of light guide tropism membrane material, so that the light directing film layer (LGF) is highly suitable for shielding lower camera Technology.Annular LGF diaphragm is added in surrounding in camera region, the light on camera region periphery can be dispersed to It above camera, after these light enter LCD panel, by the regulation of liquid crystal layer, can be shown, reach really screen comprehensively Effect.
Further, in different embodiments, wherein the thickness range of the light directing film layer is in 50 μm~200 μ m。
Further, in different embodiments, wherein the inner ring radius r1 of the light directing film layer is more than or equal to 2.5mm, outer ring radius is less than or equal to 3mm, but is not limited to.
Further, in different embodiments, wherein the optical film layer includes phosphor film layer, Diffusion barrier layer and blast Film layer, wherein the light directing film layer is arranged in the phosphor film layer.
Further, in different embodiments, wherein the optical film layer includes phosphor film layer, Diffusion barrier layer and blast Film layer, wherein the light directing film layer is arranged in the blast film layer.
Further, in different embodiments, wherein the optical film layer includes light guide plate layer, Diffusion barrier layer and blast Film layer, wherein the light directing film layer is arranged in the Diffusion barrier layer.
Further, in different embodiments, wherein the optical film layer includes light guide plate layer, Diffusion barrier layer and blast Film layer, wherein the light directing film layer is arranged in the blast film layer.
Further, it is yet another aspect of the present invention to provide a kind of display devices comprising display panel and the present invention relate to And the backlight assembly.
Further, in different embodiments, wherein the backlight assembly is direct type backlight assembly, wherein the light Learning film layer includes phosphor film layer, Diffusion barrier layer and blast film layer, wherein the light directing film layer is arranged in the phosphor film layer, The LED that the direct type backlight assembly includes is arranged on the reflecting layer.Wherein short wavelength's exciting light that the LED launches The guiding light film layer can be first passed through and carry out first uniformly mixing after light directing processing, long wave is being inspired by the phosphor film layer Long light.
Further, in different embodiments, wherein the backlight assembly is direct type backlight assembly, wherein the light Learning film layer includes phosphor film layer, Diffusion barrier layer and blast film layer, wherein the light directing film layer is arranged in the blast film layer, The LED that the direct type backlight assembly includes is arranged on the reflecting layer.Wherein short wavelength's exciting light that the LED launches Can take the lead in the light beam that long wavelength is inspired by the phosphor film layer, then these light by the Diffusion barrier layer dispersion, After the light directing processing of the guiding light film layer.
Further, in different embodiments, wherein the LED packet of the camera shooting head region is arranged in the backlight assembly Include R G B three-color LED.
Further, in different embodiments, wherein the LED that the camera shooting head region is arranged in the backlight assembly is Monochromatic LED.
Further, in different embodiments, wherein the backlight assembly is side entrance back component, wherein the light Learning film layer includes light guide plate layer, Diffusion barrier layer and blast film layer, wherein the light directing film layer is arranged in the Diffusion barrier layer.
Further, in different embodiments, wherein the backlight assembly is side entrance back component, wherein the light Learning film layer includes light guide plate layer, Diffusion barrier layer and blast film layer, wherein the light directing film layer is arranged in the blast film layer.
Further, in different embodiments, wherein the display panel is passive type display panel, including but it is unlimited In liquid crystal display panel.
Further, it is a further aspect of the present invention to provide a kind of terminal installations comprising of the present invention described aobvious Showing device and a camera, wherein the camera corresponds to the camera shooting head region setting.Specifically, the wherein terminal installation It can be any intelligent terminal needed using camera shooting scheme under shielding, for example, smart phone, Intelligent flat, computer etc., But it is not limited to.
Compared with the existing technology, the beneficial effects of the present invention are: a kind of backlight assembly of the present invention, by using The light directing film layer (LGF:light guide film) that light guide tropism membrane material is constituted controls camera under display screen where it The direction of propagation of light in surrounding certain area is evenly distributed on it above camera, display screen where these light enter it It after liquid crystal layer, after the regulation of liquid crystal layer and color filter film, can be shown, to reach really, screen is imitated comprehensively Fruit, and then provide camera shooting scheme under the new-type screen of one kind.
Further, it for the light directing film layer, also has the advantage that
1, light guide tropism membrane material amount is light, thickness is thin, easy of integration in current display technology, has a wide range of application;
2, low manufacture cost, simple process, are easy to scale of mass production;And
3, the production of current display panel will not be changed, processing technology is made, to make it easy to promote and apply.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for For those skilled in the art, without creative efforts, it can also be obtained according to these attached drawings other attached Figure.
Fig. 1 is a kind of structural schematic diagram of the terminal installation provided in an embodiment of the invention, wherein only illustrating Sectional structure at its camera regional location;
Fig. 2 is light directing film layer shown in FIG. 1, the structural schematic diagram that the micro-structure used is symmetrically distributed;
Fig. 3 be light directing film layer shown in FIG. 1, the micro-structure used at asymmetric distribution structural schematic diagram;
Fig. 4 is light directing film layer shown in FIG. 1, and micro-structure is using symmetrical and asymmetric distribution for controlling light state Effect picture;
Fig. 5 is light directing film layer shown in FIG. 1, for the functional effect figure of incident light and emergent light;
Fig. 6 is the LED in camera shooting head region shown in FIG. 1 and the location diagram between light directing film layer;
Fig. 7 is a kind of structural schematic diagram for terminal installation that another embodiment of the present invention provides, wherein only scheming Show the sectional structure at its camera regional location;
Fig. 8 is a kind of structural schematic diagram for terminal installation that another embodiment of the present invention provides, wherein only scheming Show the sectional structure at its camera regional location;And
Fig. 9 is a kind of structural schematic diagram for terminal installation that another embodiment of the present invention provides, wherein only scheming Show the sectional structure at its camera regional location.
Specific embodiment
Below with reference to drawings and examples, to a kind of backlight assembly of the present invention, display device where it and its The technical solution of application terminal is described in further detail.
Wherein since scheme of the present invention includes backlight assembly, display device where it and its application terminal, and this Three aspects are the relationships for successively including, i.e., terminal applies include the display device, and the display device includes the back Optical assembly, therefore, to avoid unnecessary repetition, and clearly description, the description of embodiment presented below is then with this For inventing the application terminal being related to, and the display device and backlight assembly that are related to it are described in detail.
Refering to Figure 1, an embodiment of the invention provides a kind of terminal installation comprising display device and One camera 210.
The position definition that wherein display device corresponds to the camera 210 has camera shooting head region comprising display Panel 150 and the backlight assembly of the present invention, wherein the display panel 150 is arranged on the backlight assembly, It is preferably liquid crystal display panel 150, but is not limited to.
Wherein the backlight assembly includes substrate layer 100, the light source unit for being used to that it to be driven to include, for example, LED gusts Column.It is provided with reflecting layer 110 on the substrate layer 100, is provided with optical film layer on the reflecting layer 110.The wherein optics Film layer is provided with a through-hole 160 in the camera shooting head region, an annular light guide is arranged with outside the through-hole 160 to film layer 170, Described in the inner ring of light directing film layer 170 be arranged concentrically with the through-hole 160, the camera is set below the through-hole 160 210。
Further, in the present embodiment, wherein the optical film layer includes phosphor film layer 120,130 and of Diffusion barrier layer Blast film layer 140.Wherein the light directing film layer 170 is arranged in the phosphor film layer 120, thickness range 50 μm~ 200μm。
It is known that light guide tropism membrane material is generally prepared using organic material, pass through the microstructure change in design film, example Such as, it can be symmetrical micro-structure setting, be also possible to the micro-structure setting of asymmetric distribution, being specifically illustrating please distinguish Refering to shown in Fig. 2,3, the control to the light direction of incident light may be implemented, wherein the control light effect of the two please refers to Fig. 4 institute Show.Further, Fig. 5 also illustrates the light directing film layer 170 and illustrates for going out, entering the concrete function of light.
Based on this function of light guide tropism membrane material, so that the light directing film layer (LGF) 170 is highly suitable for shielding lower camera shooting Head technology.The annular light directing film layer 170 is added in surrounding in 210 region of camera, can be by camera 210 The light on region periphery is dispersed to the top of camera 210, after these light enter the liquid crystal display panel 150, passes through the liquid The regulation of crystal panel 150 can be shown, really shield effect comprehensively to reach.
Further, wherein the backlight assembly is direct type backlight assembly comprising the setting of LED 220 described anti- It penetrates on layer 110.As shown in fig. 1, wherein short wavelength's exciting light that the LED 220 launches can first pass through the guiding light film Layer 170 carries out first uniformly mixing after light directing processing, in the light for inspiring long wavelength by the phosphor film layer 120, then exists It enters in the liquid crystal display panel 150.
The even light effect of dispersion of the light directing film layer (LGF) 170 is to need certain vertical range among these, wherein hanging down Straight distance is longer, and even light effect is better, this vertical range refers to 170 upper surface of light directing film layer (LGF) described in The distance of 150 lower section of liquid crystal display panel, specifically as shown in the H in figure.But according to different specific embodiments, this vertical range Specific value according to different specific embodiments, with the need depending on, and be not limited.
Further, as shown in fig. 1, the presence of the light directing film layer 170 of the ring structure is in order to which it is lower The light of LED is uniformly mixed at the display panel above the camera 210.Therefore its outer diameter r2 need to be slightly larger than the length and width of LED Size, and in order to avoid blocking the shooting function of the camera 210 below, internal diameter r1 need to be slightly larger than camera half Diameter, general camera diameter<5mm, so inner ring radius r1>2.5mm of the light directing film layer.Further, due to 0.05mm < LED size < 0.5mm, so the preferred r2 < 3mm of outer ring radius of the light directing film layer 170.Certainly, in different realities It applies in scheme, the specific radius of inner and outer rings of the light directing film layer is depending on the circumstances, does not limit.
Wherein the backlight assembly is arranged in the LED of its camera shooting head region, i.e. in wire region 180 in Fig. 1 LED can be the three-color LED including R G B, with the positional relationship between the light directing film layer 170, can refer to Fig. 6 institute Show.
As shown in Figure 6, wherein 221,222,223 annular of R G B three-color LED surrounds the annular light directing film layer 170 Setting.Further, in other embodiments, wherein the LED that the camera shooting head region is arranged in the backlight assembly can also To be monochromatic LED.If selecting monochromatic LED scheme, also there is the advantage for reducing process costs and circuit design difficulty, but Be be specifically chosen three colors or monochromatic LED scheme can with the need depending on, and be not limited.
Further, it please refers to shown in Fig. 7, which illustrates a kind of terminals that another embodiment of the present invention provides The structural schematic diagram of device, wherein only illustrating the sectional structure at its camera regional location.Itself and terminal installation shown in FIG. 1 Structure is roughly the same, the difference is that only: the position of light directing film layer 170.
As shown in Figure 7, wherein the light directing film layer 170 is arranged in the blast film layer 140 in the optical film layer. Short wavelength's exciting light that wherein LED 220 launches can take the lead in the light that long wavelength is inspired by the phosphor film layer 120 Beam, then these light by the Diffusion barrier layer 130 dispersion and it is described guiding light film layer 170 light directing processing after, It enters in the liquid crystal display panel 150.
Further, it please refers to shown in Fig. 8, which illustrates a kind of terminals that another embodiment of the present invention provides The structural schematic diagram of device, wherein only illustrating the sectional structure at its camera regional location.Itself and terminal installation shown in FIG. 1 Structure is roughly the same, the difference is that only: wherein the backlight assembly is using side entrance back component, and corresponding The composition of caused optical film layer is different.
As shown in Figure 8, wherein the optical film layer includes light guide plate layer 122, Diffusion barrier layer 130 and blast film layer 140, Wherein the light directing film layer 170 is arranged in the Diffusion barrier layer 130.
Further, it please refers to shown in Fig. 9, which illustrates a kind of terminals that another embodiment of the present invention provides The structural schematic diagram of device, wherein only illustrating the sectional structure at its camera regional location.Itself and terminal installation shown in Fig. 8 Structure is roughly the same, the difference is that only: the position of light directing film layer 170.As shown in Figure 9, wherein the light directing film Layer 170 is arranged in the blast film layer 140.
A kind of backlight assembly of the present invention, the light directing film layer constituted by using light guide tropism membrane material (LGF: Light guide film) control under display screen where it direction of propagation of light in certain area around camera, make it It is even to be distributed in above camera, after the liquid crystal layer of display screen where these light enter it, filtered by the regulation and colour of liquid crystal layer It after light film, can be shown, really shield effect comprehensively to reach, and then provide camera shooting side under the new-type screen of one kind Case.
Further, it for the light directing film layer, also has the advantage that
1, light guide tropism membrane material amount is light, thickness is thin, easy of integration in current display technology, has a wide range of application;
2, low manufacture cost, simple process, are easy to scale of mass production;And
3, the production of current display panel will not be changed, processing technology is made, to make it easy to promote and apply.
Technical scope of the invention is not limited solely to the content in above description, and those skilled in the art can not take off Under the premise of from technical thought of the invention, many variations and modifications are carried out to above-described embodiment, and these deformations and modification should all When within the scope of the present invention.

Claims (10)

1. a kind of backlight assembly, definition has camera shooting head region;It includes substrate layer, is provided with reflecting layer on the substrate layer, Optical film layer is provided on the reflecting layer;It is characterized in that, wherein the optical film layer is provided in the camera shooting head region One through-hole, the through-hole are arranged with an annular light guide to film layer, wherein the inner ring of the light directing film layer and the through-hole are same outside Heart setting.
2. backlight assembly according to claim 1;It is characterized in that, wherein the thickness range of the light directing film layer exists 50 μm~200 μm.
3. backlight assembly according to claim 1;It is characterized in that, wherein the optical film layer includes phosphor film layer, expands Film layer and blast film layer are dissipated, wherein the light directing film layer is arranged in the phosphor film layer.
4. backlight assembly according to claim 1;It is characterized in that, wherein the optical film layer includes phosphor film layer, expands Film layer and blast film layer are dissipated, wherein the light directing film layer is arranged in the blast film layer.
5. backlight assembly according to claim 1;It is characterized in that, wherein the optical film layer includes light guide plate layer, expands Film layer and blast film layer are dissipated, wherein the light directing film layer is arranged in the Diffusion barrier layer.
6. backlight assembly according to claim 1;It is characterized in that, wherein the optical film layer includes light guide plate layer, expands Film layer and blast film layer are dissipated, wherein the light directing film layer is arranged in the blast film layer.
7. a kind of display device comprising display panel and backlight assembly;It is characterized in that, wherein according to the backlight assembly Backlight assembly described in claim 1.
8. display device according to claim 7;It is characterized in that, wherein the backlight assembly is direct-type backlight group Part, wherein the optical film layer includes phosphor film layer, Diffusion barrier layer and blast film layer, wherein the light directing film layer is arranged in institute It states in phosphor film layer or blast film layer;The LED that wherein direct type backlight assembly includes is arranged on the reflecting layer.
9. display device according to claim 7;It is characterized in that, wherein the backlight assembly is side entrance back group Part, wherein the optical film layer includes light guide plate layer, Diffusion barrier layer and blast film layer;Wherein the light directing film layer is arranged in institute It states in Diffusion barrier layer or blast film layer.
10. a kind of terminal installation, including display device and a camera;It is characterized in that, wherein according to the display device Display device as claimed in claim 7, the camera correspond to the light directing film layer setting of the backlight assembly of the display device.
CN201910690699.1A 2019-07-29 2019-07-29 A kind of backlight assembly, its display device and its application terminal Pending CN110456562A (en)

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Application publication date: 20191115